	<i>Thresholds Scan<br />185 M3R4 chambers passed the tests</i></font> Thresholds Scan 185 M3R4 chambers passed the tests

Tables below present:
- Thr_Max(r.u.), Thresholds in register units at Maximum of noise rate;
- N_Max, Noise rate at Thr_Max in counts/sec;
- D_100 = Thr_100(r.u.) - Thr_Max(r.u.) where Thr_100(r.u.) is the threshold in register units at noise rate = 100/s.
The following expression relates the real threshold (measured from the base-line of physical signals) with the thresholds determined by the register units:
Thr(fC)*S(r.u./fC) = Thr(r.u.) - Thr_Max(r.u.)+ OFFSet(r.u.).
Here, OFFSet=17 register units;
S=3.40 r.u./fC is the charge sensitivity corresponding to S=8mV/fC taken for M3R4 chambers;
(Note, that 1 register unit = 2.35 mV)

	FEB-1. Mean values.			FEB-2. Mean values.			FEB-3. Mean values.
Chamber	Thr_Max [r.u.]	N_Max [counts/s]	D_100 [r.u.]	Thr_Max [r.u.]	N_Max [counts/s]	D_100 [r.u.]	Thr_Max [r.u.]	N_Max [counts/s]	D_100 [r.u.]	Test Date	Plots	Comments
17	77	400639	12	75	395873	12	81	417409	12	29-JUN-07

Thr_Max in register units for M3R4-17

Thr_Max in register units for M3R4-17

FEB Channels	Ch_1	Ch_2	Ch_3	Ch_4	Ch_5	Ch_6	Ch_7	Ch_8	Ch_9	Ch_10	Ch_11	Ch_12	Ch_13	Ch_14	Ch_15	Ch_16
FEB-1	83	80	77	77	80	79	76	79	69	80	70	76	67	77	81	77
FEB-2	76	73	79	86	80	80	75	77	71	74	67	70	70	77	68	74
FEB-3	76	80	81	78	86	83	85	79	74	84	79	87	82	79	86	79

Noise rate at Thr_Max [counts/sec] for M3R4-17

Noise rate at Thr_Max [counts/sec] for M3R4-17

FEB Channels	Ch_1	Ch_2	Ch_3	Ch_4	Ch_5	Ch_6	Ch_7	Ch_8	Ch_9	Ch_10	Ch_11	Ch_12	Ch_13	Ch_14	Ch_15	Ch_16
FEB-1	548288	487740	305581	357100	266243	465206	315640	298897	299031	358508	347080	319242	395204	515085	544213	587161
FEB-2	443823	497166	289046	411007	290429	673226	313037	260472	348588	315687	430574	302023	398843	406435	496152	457454
FEB-3	543428	523228	459257	335663	440298	391863	279124	265348	363446	339319	483502	243414	478843	400893	580407	550513